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Help on how to install u-joints in my 1998 gmc sonoma, two piece shaft, and center bearing

Interested in replacing u-joints myself, two piece shaft, and center bearing

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If you dont have the proper tools its best too just pull the drive shaft and take it too autozone and have them press the new ones in!!!

Posted on Apr 23, 2009


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Replace drive shaft carrier bearing

IF by pieces you mean "U" joints . They will only need replacing if they are show looseness in the joint or rust streaks coming out of the cross seals. The following are points that you have to be very careful off . The ears ( that part that holds the "U" joints) have to ne on the same plane on assembly . On a one piece tail shaft where the sliding spline goes into the back of the gear box that is not much of a problem but if you have a centre bearing then it is critical that you get it right. when you remove the flange from the shaft to replace the bearing the flange has to go back on in exactly the same plane as the joint at the front of the same shaft. That is to say if you place the shaft on a flat surface and the ear on the shaft is vertical then the flange ear has to be vertical as well. What it amounts to is that crosses go through a phase of speed up---slow down cycle and if you have the joints out of phase the cross of one end that is speeding up is not cancelled out by the other end which is slowing down. The end result will be a harmonic vibration the will start about 30mph get really bad at about 60mph and decrease as you go faster . Unfortunately it doesn't disappear just destroys the "U" joints and the shaft and diff and gear box bearings. There are sites on the net that have photos and diagrams that will show what I am trying to say ( hardie spicer u joints and shafts)

Jan 25, 2014 | Cars & Trucks

1 Answer

Replace the u joints and carrier bearings for a 92 GMC Sonoma and now has a vibrations

When you removed the drive shaft, did you properly mark the shaft where it comes apart at the carrier bearing? This joint telescopes and usually must be separated to get the carrier bearing on/off. If you reassemble the shaft 180 degrees out (most shafts can go back together two ways), you will throw the driveshaft out of balance. The vibrations will be felt from almost the instant you start moving. You will need to drop the shaft and reassemble the shaft back to its original position.

Dec 20, 2013 | Cars & Trucks

1 Answer

Two piece drive shaft vibrating

just take the drive shaft out and replace all u-joints (3) and ur center support bearing (1) in all on my 2002 gmc sierra 2wd it was 50 dollars

Dec 07, 2012 | 2007 GMC Sierra Classic

1 Answer


if you don't have a u joint or bearing press it is very difficult to do, best bet is to reove the drive shaft and have a machine shop do the swap for you

Feb 12, 2011 | 1999 GMC Sonoma

1 Answer

My truck is a 99 gmc sonoma and it has 2 high velocity drive shaft yokes on it, and the rear one went last night. can i put a regular drive shaft on? or do i need to put one in with the high velocity...

Hello, the constant velocity joint shaft was used to remove vibration in this wheelbase truck. sometimes it worked well, sometimes it made matters worse. You can replace this shaft with a 1 piece, 2 joint shaft, and not have any safety issues, as long as the correct length shaft is used. I have seen some vibration issues doing this, but I have also seen this work without an issue. You can buy constant velocity joints still, in case you want to have yours rebuilt. Good luck...Coop

Sep 30, 2010 | 2001 GMC Sonoma Extended Cab

1 Answer

How to replace the center support bearing and what size bolts or if studs are used what size nuts are required? Also what is the best tool to use for changing the spark plug behind the steering shaft?

The center support bearing is secured to the cross-member using either a stud with an 11/16 in. nut or sometimes an 18mm nut. or it can also be sucured using a 3/8 in. bolt with a 5/8 in. bolt head and either a 15mm, 5/8", 11/16", or an 18mm nut, and GM did not stop the assembly line when they ran out of a certain nut or bolt and that is why there could be so many different ones used.

(A split drive-shaft is a balanced unit and it must be marked for proper alignment before separating the two halves or the drive shaft will no longer be in balance and will cause a vibration and early u-joint failure, and be very sure that there is a line on each half of the drive-shaft before it is separated so that the drive-shaft can be aligned re-assembled correctly)

The center support bearing should be pressed off and on the drive shaft using a hydraulic press, (a machine shop usually does not charge very much to do that) and using a hammer and a drift to replace the center support bearing is not recommended however some people do replace the center support bearing that way and a lot of the time they will damage the drive shaft or center support bearing and that will only make it more difficult and time consuming to properly install the center support bearing.

(The u-joint and the axle yoke should also be marked together before the u-joint is removed from the axle yoke so that they are installed back in the same way that they came out to prevent any drive shaft vibration)

To change the spark plug behind the steering shaft use a spark plug socket (a good spark plug socket will also have a provision for attaching a 5/8" or 16mm wrench to the end of the spark plug socket) and instead of putting an extension and a ratchet on the socket, slip the socket onto the spark plug and then use the wrench to loosen the spark plug and to tighten it, but also use a length of 3/8" fuel line and push the end of the spark plug into the fuel line and then use it to start and run down the spark plugs and also to remove the spark plugs once they have been loosened.


Sep 12, 2010 | 1996 GMC Sonoma

1 Answer

How much does a throwout bearing cost for a 98 gmc sonoma and hoe hard are they to put in or how much does it cost for someone to put it in

They run about $60, and changing them requires removing the transmission and drive shaft. While you're in there, you should probably replace the clutch and pressure plate.

Check with some local garages or dealers to get their price for doing this.

May 21, 2010 | 1998 GMC Sonoma

2 Answers

Just want to know how to change the drive shaft center bearing on a 97 sonoma

It usually presses on the splined portion after removal and disassembly of the back half of the driveshaft. That means you'll need a press to get it off and then the new one back on. Amazing things can be done with hammers so I wouldn't write off that method but having it pressed is always going to be the easy way.

Sep 06, 2009 | 1997 GMC Sonoma

1 Answer

98 gmc sonoma w 2 pc drive shaft 2wd noise from rear u joint and vibration at 40mph and up. have replaced u joints and carrier bearing. rear ball and socket were dry and rusty.

remove the rear shaft from a 1990 full size gmc van (g-van) make sure the one you select has the scew on sleeve at the front of the rear section of the shaft
this will be the right lenght
take the rear yolk off your old shaft cut of the ball socket now get the same u-joint your truck calls for and mount the rear yolk (the section of the shaft that bolts to your rear end) to the new shaft
this works ive done it
you eliminate 2 of the 4 u-joints and lighten up your shaft this releives strain on you tranny and rear end when these u-joints and ball bearings fail they cause the vibrations which ruin the rest of your drive train also you gain 10hp
i spent 300 bucks rebuilding the OEM shaft and got no where so for 25 bucks i did this

Aug 11, 2009 | 1999 GMC Sonoma

1 Answer

Universal joint needs to be replaced

If you have never done one it isn't real easy. You might want to remove your driveshaft and take it to a shop or a machine shop. If you remove the shaft they won't charge you much to install the joint. I can tell you how to change it with a vice, hammer and some kind of torch if you want to do it yourself.

May 08, 2009 | 1995 GMC Sonoma

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